of toledo



M. MALLORY SELF INDUCTION PRODUCER Filed Dec. 18, 1924 TiQiE PatentedMar. 22,1927. 1,621,552 UNITED? SIZE A M FFICE.

MARION MALLonx, or roLEno, oHI o, AssIGnon "r MALLonY ELECTRIC conroRA it H 0F D OHIO, A CORPORATION or OHIO. I

SELF-INDUCTION PRODUCER.

Application filed December 18,1924.- Serial No.756,6 56.

My invention has for its object to provide the coil When the vibrating reed is moved a simple means whereby the ordinary vibrator short circuited and is used with a. cam ing spark coils commonly used for engine operated circuit closer. I .The decrease of the ignition, may be readily converted into nonreluctance 'producesa counter'electromotive 1 5 vibrating coils that may be efficiently used force that cuts down the battery current and 60 y for the same, purpose. yet produces the maximum number of lines In induction coils of the vibrating type of force producable by the current of the the primaries of the coils have a W resistbattery 'Within' the time that. the circuit .ance and moreover they do not have suflicloser is closed, and so that when the circuit 1o cient self-induction to produce a counter is broken a maximum induced current is l5 electro-motive force in the primary coil that produced in the secondary coil. Preferably will prevent substantially free flow of a I I do this by using one of the induction coils direct constant current through the coil. for the electric transformation and the cores When, therefore, automobile batteries are of the coil and of the adjoining coil for inconnected to such coils through the ordinary creasing theuself induction. Thus I utilize 70 cam controlled circuit closers, the coils be- What is already supplied in'connection with come over heated and the batteries are soon a Ford automobile or other .automobileshavexhausted. If sufiicient resistances are ininga plurality of vibrating coils. This is serted in the coil and battery circuits to. preferably done by placing a magnetic body prevent early exhaustion of the batteries, the of suficient size in contact. with the upper .75 current produced is so weak that ignition be-- or lower ends of-the two cores The same comes deficient. In the ordinary magneto. y o be acco p ished by p acing a body operated ignition coil,such. asthat found in f rme f g ic, m l n COIltact W h the ordinary Ford automobile, four inducn end 0f e 00m Of One Of the Coils, the

.25 tion coils are placed, side byside, in ,posibody extending to a point in the vicinityof so tion, each h i a l ti l ll o the other end'of the core of the coil. Thus and a'low resistance primary. Also a reed I m l to adi y c nge a Vi r ing circuit breaker operates to rapidly open and spark ignition system to a single spark sysclose the circuit of each primary coil. The m g .30 magneto is connected to theengine shaft so Th arr ngement and structure of the 85 that maximum parts of the potential wave. p rts, however, may be greatly varied and will be in synchronism with the ignition ill h Within the purview or the scope of timer of the engine. The timer is located in l im f my invention. hereinafter apthe circuit that connects the primariesqofp n T illustrate a Practical pp 5 the induction coils in the order that the tion of the invention I have selected two or'j spark plugs, connected to th ndar three forms of structures containingthe incoils, are to be fired. When a battery, convention, and illustrative ignition systems trolled by a circuit closer operated synchro involving the use of my invention and shall 'nously with the pistons of the engine, is'condescribe them hereinafter. The structures -40 nected to the primaries in succession, the Selected and the systems referred to are 95 reed vibrator interferes with the circuit W fl hc ccompanying drawings; closers action and hence the vibrator must gt f 1 h d wi g illustrates a be short circuited or eliminated. Since the; top view of an induction coil, or unit of the spark is produced on the break of the cirtype commonly used in the Ford automobile.

5 cuit closer, it maintains a relatively long This unit is commonly referred to as avetotal period of current flow through the brating spark. Fig.2 is a side vie'w of a low resistance and low self induction pritopportion ,ofthe coil illustrated in-Fig. mary coils, which soon destroys the battery. 1. Fig. 3 illustrates a pairof coil's, like that When the coils of the vibrating type are shown in Figs. 1 and 2, modified so as to connected to a battery, the points burn and embodyfmy invention; Fig. i illustrates a. 1 5

pit and are soon destroyed, which requires sidefview of the coils shown in Fig. 3. Fig. continual adjustment and cleaning. 5'is a diagrammatic illustration showing-the .By my invention I decrease the reluctance extension of the field through the magnetic of the field of one or more of the induction material of the coils whereby the self induccoilswhichincreases the self induction of tion of one of the coils or of both er the no coils, it both are connected in the ignition circuits, is greatly increased. Fig. 6 is a diagram of a system that may be used where a plurality .of induction coils, furnished with the ordinary automobile, are utilized in connection with a battery ignition system and which involves the use of my invention.

It has been found by owners of cars that when they have changed their ignition systems from the vibrating spark system to a single spark system the battery soon becomes exhausted. In order to maintain the battery in its normal condition and yet utilize the induction coils furnished with the car to reduce the cost of installation, various eX pedients have been used or followed. These, however, have resulted in so weakening the current directed through this, the ignition .part of the automobile electric system, that the ignition is even less ehicient than the original vibrating spark system, and frequently causes failure in the ignition .ofthe' enginefcylinders. Also a special ,coil of the non-vibrating type is used but this adds greatly to the cost of the installation of the system. By my invention 1 have provided a means whereby the coil furnished with the machine may be used and yet produce the same efficiency that may be produced by 0 special single spark coil. In the use of my of force are created, such as to produce a invention the current within each primary coil of one or more of the induction coils will be automatically retarded .to a desired degree and until the desired number of lines flaming arc or spark of the required temperature at the terminals 01' the spark plugs in the engine cylinders, whereby ignltion will be assured, notwithstanding the change from the vibrating spark ignition system to thesingle spark ignition system by the use of coils that constitute standard parts of the automobile of that particular type. The

invention is particularly applicable to the I ignition systems of Ford automobilcswherein induction coils of the type shownin Figs. land 2 of the drawings are commonly used 'in connection with the well -known Ford magneto.

The induction coils are located in receptacles 1 and are each provided with a vibrating reed 2, that is anchored to a conductor member 3. A pair of points 4 are secured one to the reed 2 and the other to an adjustable bridge 5. The bridge 5 is supported in position by uprights 6, one of which may form a binding post to establish electric connection with one of the points 4:, and its positionrelative to the reed 2, is adjusted by ni-eiuls of the thumb nut 7 located in the threaded post 8. Thus the points {L may be [adjusted one relative to the other. The induction coil is connected in the Ford ignition system in the manner well known in the art.

Also, as well known, the primary coil is of low resistance and the induction coil, as a whole, has a very low self induction and consequently when the induction coil is .used for producing ignition sparks at the terminals of the spark plugs in a single spark system, the battery is rapidly discharged as its maximum out-put is utilized during the period which the circuit closer is closed. Furthermore, it has been found difficult and quite impossible to accurately operate the well known cain controlled circuit closer to cause periodic closing of the oil-- cult to reduce the total period, in whichthe full effectiveness of the battery is utilized in the ignition system. To shorten the. period of closing of the circuit of the primary coil renders uncertain the operation of the system and makes practically impossible accurate adjustments to attain a satisfactory ignition of the engine. In converting the vibrating ignition'system to a single spark ignition system, the reed 2 is removed and the wire 10 is connected at one end to the conductor member 3, and the other end to the binding post 4. TWh-ere two of the induction coils'are to be used, the coilsof one to be connected in the electric circuits and the core of the other to decrease the reluctance and increase the self induction, the alterations are also made in connection with a second coil. If desired substantially the same arrangement existing in connection to the vibrating system maybe utilized in connection with the single spark systenn in that the four coils may be used successively for producing the ignitions of the cylinders at the proper times in the :cycle of operations of the pistons. In that case thefour induction coils are modified as described. Whether two or four coils are used to produce the ignition, and to increase the self induction, they are joined together in pairs :by a loar ll of magnetic material, that extends across the upper ends of the cores 12 which pro-- trude from the receptacle. They are prefl erably secured in position so as to make contact with the said ends of the cores. The bar 11 is also preferably formed of laminated magnetic material. The bar '11 de crea es the reluctance and increases the quantity of the magnetic material through which the lines of force Jroducedby the coil connected with the ba tery may extend and consequently greatly increases the num-- loer of lines of force produced by the coil. Vi/fhen, therefore, the battery is connected to the primary of the induction coil the large self induction that is produced greatly reduces the quantity of the current that flows from the battery by reason of ,the production of the large count-er elect-ro-mot'ive force, which requires time to overcome.

The electrical connections may ,be varied as may be desired to produce the arcs at the terminals of the'spark plugs. In the form of system shown in Fig. 6 whereinth-e four induction coils are utilized to produce the ignition of the engine, the battery 13 is connected to-thejprimaries let and the primaries are in turn connected to the contacts 15, of the distributor, whileithe rotatable arm'16 is connected to the circuit closer 17 having the cam 18. The'arm 16 andthe cam -18 are connected to the camshaft of the engine WlllCll s connected in the usual nratlo.

with the driving shaft of. the engine. A condenser 19 s connected across the circuit closer to reduce the arcing at the points or contacts of the circuit closer. The distributor and circuit closer, that is the timer may be constructed in the manner well known in the art, that'is, any of the well known timers may be used. Thus the circuit of the battery I 20 is periodically closed through the primaries in succession, and, while the circuit is closed through each primary, the circuit closer 17 is opened to break the circuit through the primary and de-energize the primary coil. This'produces a hightension current in the secondary of the induction coil. .The secondary coils 20 of the induction coils are connected to the spark plugs 21 and consequently the high tension current produced in the secondary coil by the de-energization of a primary coil produces an arc at the 7 terminals of the spark plugs. In'the, form core and primary and secondary coils, a reprimary and secondary for each coil, threaded posts located on the ends of the container, a bar of magnetic moyable bar of magnetic. material magnetically connecting the cores of the induction. coils.

2; In combination with a of magnetic material, a threadedmeans for pair of induction I -.coils located side by side, each havin a core and primary and secondary coils, ar

removably securing the barin position to magnetically connect the cores of. the induction coils.

3. In combination with a pair of induction coilsllocated side by side, each having a core and primary-and secondary coils, a"

bar of magnetic material, the bar having ears, a threaded means extending through the ears for removably securing the bar in position to magnetically connect the cores of the induction coils.i- 1

4. In combination with a pair-of Ford in-' I duction coils, each havin a core and coils, a container material magnetically connecting the; cores of the induction coils andsecured in position by the threaded posts;

5. In combination with a pair of Ford induction coils, each having a core. and prlmaryand secondary 0011s, a container for each coil, threaded-posts located on the ends "of the container, a bar of magnetic material magneticall connectin --the cores of the induction coi s, the bar aving an ear for receiving the threaded post, the posthaving a nut for securing the barin position.

6. In combination with a plurality of closely positioned coils, means for decreasing the reluctance of the-coils, comprising a magnetic keeper across the ends of the cores of said coils. I

In testimony whereof, I have hereunto signed my name to this specification.

MARION MALLORY. 

